V2I6P51

Muscles of Soft Palate – A Review

Dr. B. Lakshmana Rao^1*

Abstract

The levator veli palatini, tensor veli palatini, palatoglossus, palatopharyngeus, and musculus uvulae are the five main muscles that make up the soft palate, a dynamic fibromuscular structure that controls vital processes like speech, swallowing, and the regulation of the Eustachian tube.  These muscles, which are mostly derived from the fourth pharyngeal arch (with the exception of the tensor veli palatini from the first), control middle ear ventilation, tongue-pharynx interaction, and velopharyngeal closure.  Tensor veli palatini tenses the palate and opens the Eustachian tube, whereas levator veli palatini raises the palate to seal the nasopharynx.  The musculus uvulae regulates uvular movement, while the palatopharyngeus and palatoglossus aid in pharyngeal constriction and tongue elevation, respectively.  With the exception of the tensor veli palatini (mandibular nerve, CN V3), which are innervated by the vagus nerve (CN X) via the pharyngeal plexus and supplied by branches of the facial and maxillary arteries, these muscles are vulnerable to both acquired conditions (such as neurological disorders, surgical trauma) and congenital abnormalities (such as cleft palate, submucous cleft).  These abnormalities result in complications such as dysphagia, velopharyngeal insufficiency, and Eustachian tube dysfunction, which call for prosthodontic (like obturators), surgical (like palatoplasty), and therapeutic interventions.  This abstract emphasizes the soft palate musculature’s role in oral and pharyngeal physiology as well as its anatomical, functional, and clinical significance.

Keywords:

Soft palate, levator veli palatini, tensor veli palatini, palatoglossus, palatopharyngeus, musculus uvulae, velopharyngeal insufficiency, cleft palate, prosthodontics